baber/WOPTO huggingface dataset:
Patent FR-2251793-A1 (FR)
Title: Heat recovery in ventilation systems - by plate heat exchanger constructed from corrugated partitions with flat plates interposed
IPC: F28F19/00
Filed: 1973-11-15
Abstract: A plate heat exchanger, for recovering heat from the outgoing stale air in ventilation systems in dwellings and transferring the heat to the incoming clean air, consists of a shell with an insulating jacket and stale air and clean air entry pipes and exit pipes in which are a number of corrugated partitions with flat plates between them. The partitions and plates are made of plastic material transparent to radiation at low temps. The ends of the partitions are formed so as to make transverse channels leading to the inlet and outlet pipes. The flat plates are interposed only between the corrugated parts. The corrugations in the partitions all have the same height but have different widths, becoming progressively smaller away from the stable air entry and exit pipes. The exchanger offers less resistance to flow and therefore, consumes less energy than conventional plate exchangers because of the smoother flow passages. Construction is more economical because there are fewer joints to be made air-tight. The effects of frost formation when the temp. of the incoming clean air is below 0 degree C are less, so that it is not necessary to reduce flow or warm the air. Heat transfer is more efficient because of the use of materials transparent to radiation.
Patent FR-2262731-A1 (FR)
Title: Sliding vane motor or compressor - has vane guided by eccentric preventing direct contact between vane and casing
IPC: F01C1/344
Filed: 1974-03-01
Abstract: The rotor (1) is mounted rigidly on the shaft (2) and rotates in the circular casing (3). A hollow stationary shaft fitting inside the rotor shaft (2) has an eccentric middle portion (9) which fits in a slot (11) in the inner end of the sliding vane (8). The eccentricity of the shaft is equal to the eccentricity of the rotor with respect to the casing, so that the sliding vane is moved radially ensuring that there is no actual contact between the end of the vane and the casing bore. Sealing is provided by the lip seals (12) inserted in the outer end of the vane (8). This design reduces friction and is applicable to both motors and compressors.
Patent FR-2270129-A1 (FR)
Title: Safety brake for heavy vehicle - uses residual brake pressure to operate brake upon normal brake failure
IPC: B60T1/06
Filed: 1974-03-22
Abstract: There is a cylinder in which slides a piston which has a tail piece ending in another piston which slides in another cylinder. In sliding, the first piston compresses a spring and connects with pistons moving in other cylinders and acting in opposition with the first piston due to pressure in the cylinders left after braking. During its movement in the first cylinder the piston uncovers two openings which allow brake fluid to enter the brake cylinders operating brake pistons on a transmission shaft. In the case of normal brake failure pressure is available to actuate the transmission brake and is given by loss of normal pressure.
Patent FR-2273205-A1 (FR)
Title: Seal assembly for rotary shaft - vibrates seal collar to separate bearing faces for lubrication leakage
IPC: F16J15/34
Filed: 1974-05-27
Abstract: To avoid completely dry mating faces and hence rapid wear and failure of a rotating shaft seal, one component is vibrated to allow controlled leakage of fluid contained under pressure. Vibration is produced electrically, mechanically, or hydraulically. The rotating shaft (1) has fixed to it a collar (5), by which an axial load may be applied via a spring (8) to a sleeve (7) which forms one of the seal components. The main sealing faces (14, 15) are formed between the sleeve and non-rotating ring (13) sealed (16) to the supporting body (2). A vibrator (17) transmits vibrations via a lever (18) to the ring, causing intermittent contact between the main sealing faces and thus a regulated amount of lubrication and leakage.
Patent FR-2330088-A1 (FR)
Title: Vending machine for printed matter - has selection buttons on front panel to select e.g. tourist guides in various languages
IPC: G07F17/16
Filed: 1974-06-10
Abstract: The vending machine, e.g. for distributing tourist guides written in a selected language, has the front panel divided into different zones (1..6) from top to bottom, respectively used for the selection buttons, the operating instructions for the machine, the different categories of printed matter available and receptacles for receiving the selected dispensed guide etc. The machine is pref. coin-operated with a coin-return facility if the machine fails to operate, with different selection buttons corresponding to the different groups of printed matter, while the operating instructions are pref. also printed in several languages.
Patent FR-2238510-A1 (FR)
Title: Game with ball attached to two elastic strings - strings pass over fingers and the ball is moved between the hands
IPC: A63F7/00
Filed: 1974-07-16
Abstract: The toy is formed by a sphere made in rubber, plastic or any other material and by elastic strings attached to its surface at two diametricaly opposed points. These strings each have a loop at their ends, through which the fingers of each hand pass in order to operate the toy. Making ful use of the string's elasticity, the strings may be put under tension or released and by quickly and repeatedly doing so the sphere is made to go from one hand to the other. The ball may be hollow and contain granules to produce noise or a small battery operated lamp.
Patent FR-2284858-A1 (FR)
Title: Damping wad for shotgun cartridge - has resilient spherical portion between sealing discs reducing recoil
IPC: F42B7/08
Filed: 1974-09-12
Abstract: A wad for a shotgun cartridge, designed to reduce the recoil after firing, and to increase the length of flight of the pellets, has an upper disc (1) and a lower disc (2) with a portion (3) shaped like a rugby ball between them, this portion having a set of slots (4) through it. The upper disc which rests against the pellets, has a sealing and lubricating ring (5) mounted in a slot around its edge. when the charge is fired, it presses the lower disc inwards, compressing the middle portion (3) inwards thus reducing the recoil, then the middle portion assists the ejection of the pellets.
Patent FR-2288858-A1 (FR)
Title: Silencer for IC engine - has perforated straight through pipe in compartmented cylindrical body
IPC: F01N1/02
Filed: 1974-10-24
Abstract: The exhaust gases from the engine pass through the pipe (1) which is provided with circumferential rows of perforations (5). The pipe (1) is fitted inside a cylindrical body (2) which is divided into compartments (3) by partitions (4). The pipe (1) is so arranged that it lies on the lower inside surface of the body (2) and each row of holes (5) is centrally disposed in each compartment (3). Any water formed by condensation of the exhaust gases is swept out of the pipe (1) by the flow (f) of the gases. The pipe (1) has a diameter of about 20 mm and is suitable for engines of 100 cc capacity. For larger engines up to three such tubes (1) may be used.
Patent FR-2292591-A1 (FR)
Title: Electric heater wood marker device - has resistance elements fixed to metal block carrying design
IPC: B41M5/24
Filed: 1974-11-29
Abstract: The device is for marking wooden items, and has one or more heater elements, fixed to a metal block (1) bearing the desired caption or design (2). The inscription can be integral with the block, or secured to it. The heaters can be electrical resistances, bringing the metal block up to the appropriate temperature and accommodated inside it. The block can be supported by a plate, from which it is insulated by a plate of material such as asbestos. The supporting plate can in turn be mounted on a sleeve 30 to 100 cm. long with handles at the end.
Patent FR-2299656-A1 (FR)
Title: Optical coupler for light guide interconnection - includes optical transmission system incorporating transparent plastics or glass members
Inventor: HAWKES THADDEUS
IPC: H04B10/213
Filed: 1975-01-31
Abstract: Optical coupling device for interconnection of light guides in an optical transmission system comprises a transparent optical propagation medium (5) formed by a central arm (A) which is divided at each end into two terminal arms (B1, C1, and B2, C2). Each of the two pairs of terminal arms forms a three-way coupling device with the central arm. One of the terminal arms has its end face reflecting, typically as the result of a metallic deposit (4). The optical liaison may be achieved by a portion of transparent plastics or vitreous material, and the transmission stages may be optical fibres.
Patent FR-2299954-A1 (FR)
Title: Tubular packaging film slotted to allow lateral stretching - to provide for size variations and or ventilation
IPC: B65D65/38
Filed: 1975-02-05
Abstract: Packaging sheets are made by cutting staggered arrays of slots in flexible sheet or film in a pattern which allows the sheet to buckle and stretch laterally to the slot axes. The sheet is esp. suitable for tubular shrink wrap film to be fitted over articles of various different sizes, esp. for contg. goods requiring ventilation. The sheet used may be flexible or semi-rigid and may be subjected to transverse stretching either immediately after mfr. or at the time of use. The stock sheet may be slotted by multiple rotary cutters on a common shaft with blade profiles interrupted at intervals staggered with respect to adjacent blades.
Patent FR-2301353-A1 (FR)
Title: Orientable vice for securing stone blocks during surfacing - has static and mobile jaw with jack mounted on axle beam
IPC: B28D7/04
Filed: 1975-02-24
Abstract: The orientable vice for maintaining heavy blocks with work surfaces at specific angles, e.g. stone blocks during surfacing operations, has a mobile jaw (4) which is displaced by a jack (5). The mobile jaw-jack assembly is retractable to facilitate placing of the workpiece block in position. a horizontal axle beam (2) is mounted to span a well with the fixed (3) and mobile (4) jaws mounted on the axle together with a workpiece support platform (6). The workpiece is clamped in position and the axle rotated by a standard mechanism, e.g. crown wheel (7) and pinion, and automatic anti-rotation locks are included.
Patent FR-2302891-A1 (FR)
Title: Installation for washing vehicles - has reversible driven rotating brush swinging through 180 degrees with cam and microswitch control
IPC: B60S3/06
Filed: 1975-03-07
Abstract: The installation has a vertical rotating brush (1) for washing the sides and rear of the vehicle. This brush is housed in a framework (7) which is pivoted so as to swing through 180 deg.. The direction of brush rotation can be reversed after a swing of 90 deg.. The reversal is effected by a microswitch contact (13) acted upon by a solid cam on the brush framework, acting directly on the electric motor (12) which drives the brush. A second microswitch (17) is used to cut off the supply to the motor when the brush framework has swung 180 deg.. The arrangement simplifies and improves washing action.
Patent FR-2304873-A1 (FR)
Title: Generating and space heating unit - has engine using exhaust to heat pulsed air flow also variably heated by electric resistance
IPC: F28D21/00
Filed: 1975-03-19
Abstract: A space heating and generating unit (1) consists of a diesel or petrol engine directly coupled to an alternator. The engine is cooled by air drawn over it by a fan mounted on the front of the engine. The air is discharged through a duct (2) placed in the upper part of the unit running above the alternator. The exhaust of the engine is taken through a plate type heat exchanger (4) placed in the duct so that the heat in the exhaust is given up to the air. Beyond the heat exchanger is an electric heating resistance (5) which can be supplied from the alternator through a control switch (6). The air discharges through louvres (7) at the end of the duct of heat the surrounding spaces.
Patent FR-2265224-A1 (FR)
Title: Logic circuit with an output secure against short-circuit - has a circuit for improvement of its freedom from interferences
IPC: H03K5/003
Filed: 1975-03-21
Abstract: The circuit output can be connected, depending on the high or low level of a control signal, through a switching amplifier to a high level supply voltage, or through a second switching amplifier to a low level supply voltage. A current limiting resistor is in series with the circuit output, with its input connected through diodes biassed in a blocking sense to the high and the low supply potential. When the control signal level is low, the switching amplifier for low supply voltage is connected through a capacitor at its output as a Miller integrator.
Patent FR-2307169-A1 (FR)
Title: Bayonet clip fixing device - assembled by combined axial and rotational motion and also used as electric plug and socket
IPC: F16B21/04
Filed: 1975-04-09
Abstract: The male member of the fixing device has a central pin (m') which projects beyond two radial arms (m'). Each of these arms (m') has a curved pin projecting from one side of the arm. The female member has a central hole (F') to receive the pin (M') and two radial arms (f'). These radial arms have two transverse holes to receive the pins of the male member. The coupling can thus be assembled by a combined axial and rotational motion. An alternative design uses three radial arms and this type can be used as a three pin electrical plug and socket connection. The central pin (M') may be threaded and the curved pins lie on helix to provide a firmer grip.
Patent FR-2314427-A1 (FR)
Title: Concrete pipe sealing joint - has trapezoidal rubber ring mounted on steel ring
IPC: F16L25/00
Filed: 1975-06-11
Abstract: The spacer and seal for use between two concrete pipes has a steel ring on the inside of which is mounted a trapezoidal rubber ring. The inclined sides of the rubber ring abut the inclined ends of two pipes, these ends starting at a reduced dia. and each having two distinct inclination portions. A wooden wedging piece is positioned between the bike end faces.
Patent FR-2333307-A1 (FR)
Title: Multiple doorbell system with selective display - is connected to memory storing data relating to inhabitants
IPC: G08B5/36
Filed: 1975-11-27
Abstract: The doorbell system comprises a bell which is actuated via manual push-button switch, together with a display, connected to a selective memory. The latter stores data relating to the inhabitants and causes a particular display to be provided in accordance with the stored data, when the push-button is depressed. The doorbell system may be used for several flats in the same building and a number of respective push-buttons (5i) are associated with a single display (40) having a different display lamp (6) for each flat. Each push-button (5i) operates a respective bell (1i) and at the same time a corresponding memory energises the display (40) e.g. to indicate if the inhabitant of the flat is at home.
Patent FR-2307358-A1 (FR)
Title: Electric contact of silver-tin oxide fibre composite - for circuit breakers of 40-400 a rating and 50-500 gauss blowout field strength
IPC: H01H1/0237
Filed: 1976-02-09
Abstract: Electric contact, eps. for circuit brakers rated at 40-4000 amps. at a magnetic blowout field strength of 50-500 gauss, consists, at least in the contact layer, of a composite of Ag and fibrous embedded SnO2, the SnO2 fibres being aligned parallel and perpendicular to the switching plane. These fibres pref. are 1-15 mu m long and are present in an amt. of 12-18 wt.%. Much lower spark loss then with the conventional Ag/CdO or other metal oxide contacts is obtd.
Patent FR-2304555-A1 (FR)
Title: Coupled railway truck unloading device - has trucks fixed in support framework executing cyclic rolling motion
Inventor: JANIK JAN
IPC: B65G67/50
Filed: 1976-03-19
Abstract: The trucks held in a tipper are turned about an axis parallel to the direction of travel. The trucks, which are coupled individually or to a train, are fixed in a support framework. This framework executes a cyclic, rolling motion from an output position when the truck is vertical, into an end position where the unloading takes place. The path of the rolling motion is equal to approximately half of the outer circumference of the truck tipper. A support mechanism forms a rotatable segment enclosing the truck (9). At its circumference, the support mechanism has roller rings (2) which lie on tracks (4) arranged transverse to the axis of the segment.
Patent FR-2347794-A1 (FR)
Title: Indoor UHF loop aerial for TV receiver - has one loop end soldered to outside of metal tube and other end extending axially into tube
IPC: H01Q1/12
Filed: 1976-04-07
Abstract: The indoor UHF loop aerial for e.g. a TV receiver, has relatively few components and is therefore simple to to assemble. The loop (2) (which may be polygonal or circular) has its ends bent out parallel to one another. One end is soldered to the outside of a short metal tube (3) and the second end is reduced in diameter to form the centre conductor for soldering to a coaxial cable. The second end of the loop is held coaxially inside the tube by an insulating plug. A plastics collar (4) encloses the solder joint between first end and the tube. This joint is situated at the top of the tube. Alternatively, the ends of the loop may be soldered or welded to two short lengths of wire one of which is soldered to the tube and the other acts as inner conductor.
Patent FR-2314323-A1 (FR)
Title: Insulated roof with double asbestos cement sheets - has Z shaped hangers between sheets and insulation between them
Inventor: ROKER CYRIL FREDERICK
IPC: E04D13/16
Filed: 1976-06-02
Abstract: An insulated roof has a set of suspension elements in the form of Z shaped spacers with overlapping corrugated asbestos cement panels laid across their tops, and with further corrugated asbestos cement panels suspended from their bottoms. Both tops and bottoms are extended with a return flange giving extra stiffeness, and inside each U shaped bottom part is inserted an inverted U shaped supporting cross member. One end of the asbestos cement panels is supported by this cross member, and securing screws are inserted nearby. The opposite bottom face of the Z member has an angle support attached to it, on which rests the other end of each asbestos cement panel, similarly with securing screws nearby. A glass fibre insulation layer is positioned between the corrugated panels.
Patent FR-2352964-A1 (FR)
Title: Rotary engine with turbine wheel - has laser producing shock waves in water within rotor wheel to cause rotation
IPC: F03G7/00
Filed: 1976-05-28
Abstract: The engine has a cylindrical casing (1). Inside this there is a rotor (2) which fits closely to the casing and has a series of recesses (3) forming pockets round it. Each of these is filled with water. There is an electrically driven laser emitter (4) in one section of the casing. The beam of coherent light emitted by it produce shock waves in the rotor pocket immediately under the emitter. These waves exert a circumferential force on the end of the pocket and cause the rotor to revolve. The revolution brings the next pocket under the emitter and the process is repeated. The engine thus produces rotary motion without the use of combustible fuel.
Patent FR-2364806-A1 (FR)
Title: Modified bicycle frame construction - has narrow width front forks, rear stays and rear wheel mounting plates allowing rear wheel to be near seat tube
IPC: B62K3/04
Filed: 1976-09-16
Abstract: A bicycle frame has its front forks (7) rear stays (10) and rear wheel mounting plates (13) so constructed as to reduce the spacing of the tubes (9) of the front forks (7) and the rear stays (10) and to mount the rear wheel very near to the seat tube (3), to obtain a compact, robust and light frame. The front forks (7) comprise a narrow head (8) brazed to the tubes (9) by rounded inner portions. The upper ends of the tubes forming the rear stays (10) are cut away to reduce their spacing where they are connected to the seat joint (11). The cut-away ends are closed by plates save for apertures which receive the ends of a reinforcing arch member. The rear stays (10) are inter-connected by a brake-supporting bridge (12) whose ends partly embrace and are brazed to the stays (10). The ends of the slots (13a) of the mounting plates (13) have adjusting screws (14) and springs (15) or plastics sleeves.
Patent FR-2367384-A1 (FR)
Title: Base-band data signal output quality control - uses reference frequency in detecting phase modulation affecting data signal
Inventor: FILAFFERRO RENE
IPC: H04L1/20
Filed: 1976-10-06
Abstract: The appts. provides control of the quantity of a base-band data signal, by detecting the phase modulation affecting the frequency of the signal. An emitter receiver has available the signal frequency (F1) reformed from the signal in question, and a reference frequency (F2) which is not modulated and close in frequency to the signal (F1) including the signal in question. The circuit includes a phase discriminator (10) receiving the signal frequency (F1) and the reference frequency (F2). A pass band filter (11) is connected to the output of the phase discriminator and a detector (12) receives the filter output.
Patent FR-2370283-A1 (FR)
Title: Speed control device, e.g. for washing machine - which uses magnet to produce pulses measured by inductor connected to transducer circuit
Inventor: EXTRAT GEORGES
IPC: D06F58/50
Filed: 1976-11-05
Abstract: A control circuit for regulating the speed of e.g. a washing machine has a permanent magnet in the main drive shaft and which produces impulses in an inductor connected to a magnetic circuit. A switching transistor is connected to the inductor and the collector and emitter of the transistor are connected to a condenser and a resistor in series and across which a voltage is applied by a generator. A semi-conductor is between the junction between the condenser and resistor and the collector of the transistor to produce a control signal voltage to the condenser so that if a predetermined voltage is surpassed the voltage supplied by the source is adjusted to slow down the speed of the machine. Accurate control of the rotation of the washing machine is achieved.
Patent FR-2371817-A1 (FR)
Title: Dispositif correcteur de distorsion des etages d'amplification transistorises a large bande et amplificateur comportant de tels dispositifs
Inventor: LEGENDRE PHILIPPE
IPC: H03F1/32
Filed: 1976-11-19
Abstract: La présente invention concerne la correction de distorsion d'intermodulation des amplificateurs transistorisés à large bande, causée par l'effet varactor des transistors travaillant à fort niveau. L'invention consiste à disposer dans le circuit d'une électrode d'un transistor ou entre deux étages transistorisés, un circuit équité d'au moins un varactor en parallèle avec une résistance et alimenté par le courant traversant le ou les transistors sous une impédance de source suffisamment faible vis à vis de celle de ce circuit, les effets de la variation de la capacité du ou des varactors en fonction du signal compensant ceux dûs à cet effet varactor. L'invention est en particulier applicable aux répéteurs des câbles coaxiaux à grande capacité.
Patent FR-2373892-A1 (FR)
Title: Single-piece buried earthing mat or grille - consists of set of horizontal and vertical wires woven together with several vertical wires elongated to make connection above ground
IPC: H01R4/66
Filed: 1976-12-13
Abstract: The earth grill (1) is formed by a mesh of electrical conductors. The output conductors (2) of the earth grill are part of the grill and have no joints in them. Thus the electrical resistance of the grill is a minimum and there is no possibility of breakage and corrosion at joints when the grill is buried. The output conductors (2) may be spread out to give separate connections or they may be brought together to make a single connection which is arranged above the surface of the earth.